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Added workflow sample: Sub-workflows (dapr#1395)
* Added Workflow with sub-workflow Signed-off-by: Whit Waldo <[email protected]> * Removed duplicate package version reference Signed-off-by: Whit Waldo <[email protected]> --------- Signed-off-by: Whit Waldo <[email protected]> Signed-off-by: Divya Perumal <[email protected]>
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| // ------------------------------------------------------------------------ | ||
| // Copyright 2024 The Dapr Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ------------------------------------------------------------------------ | ||
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| using Dapr.Workflow; | ||
| using Microsoft.Extensions.DependencyInjection; | ||
| using Microsoft.Extensions.Hosting; | ||
| using WorkflowSubWorkflow.Workflows; | ||
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| var builder = Host.CreateDefaultBuilder(args).ConfigureServices(services => | ||
| { | ||
| services.AddDaprWorkflow(options => | ||
| { | ||
| options.RegisterWorkflow<DemoWorkflow>(); | ||
| options.RegisterWorkflow<DemoSubWorkflow>(); | ||
| }); | ||
| }); | ||
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| using var host = builder.Build(); | ||
| await host.StartAsync(); | ||
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| await using var scope = host.Services.CreateAsyncScope(); | ||
| var daprWorkflowClient = scope.ServiceProvider.GetRequiredService<DaprWorkflowClient>(); | ||
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| var instanceId = $"demo-workflow-{Guid.NewGuid().ToString()[..8]}"; | ||
| await daprWorkflowClient.ScheduleNewWorkflowAsync(nameof(DemoWorkflow), instanceId, instanceId ); | ||
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| await daprWorkflowClient.WaitForWorkflowCompletionAsync(instanceId); | ||
| var state = await daprWorkflowClient.GetWorkflowStateAsync(instanceId); | ||
| Console.WriteLine($"Workflow {instanceId}, state: {state.RuntimeStatus}"); | ||
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| state = await daprWorkflowClient.GetWorkflowStateAsync($"{instanceId}-sub"); | ||
| Console.WriteLine($"Workflow {instanceId}-sub, state: {state.RuntimeStatus}"); |
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examples/Workflow/WorkflowSubworkflow/WorkflowSubworkflow.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net8.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
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| <ItemGroup> | ||
| <ProjectReference Include="..\..\..\src\Dapr.Workflow\Dapr.Workflow.csproj" /> | ||
| </ItemGroup> | ||
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| <ItemGroup> | ||
| <PackageReference Include="Microsoft.Extensions.Hosting" /> | ||
| </ItemGroup> | ||
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| </Project> |
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examples/Workflow/WorkflowSubworkflow/Workflows/DemoSubWorkflow.cs
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| // ------------------------------------------------------------------------ | ||
| // Copyright 2024 The Dapr Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ------------------------------------------------------------------------ | ||
|
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| using Dapr.Workflow; | ||
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| namespace WorkflowSubWorkflow.Workflows; | ||
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| internal sealed class DemoSubWorkflow : Workflow<string, bool> | ||
| { | ||
| /// <summary> | ||
| /// Override to implement workflow logic. | ||
| /// </summary> | ||
| /// <param name="context">The workflow context.</param> | ||
| /// <param name="instanceId">The deserialized workflow input.</param> | ||
| /// <returns>The output of the workflow as a task.</returns> | ||
| public override async Task<bool> RunAsync(WorkflowContext context, string instanceId) | ||
| { | ||
| Console.WriteLine($"Workflow {context.InstanceId} started"); | ||
| Console.WriteLine($"Received input: {instanceId}"); | ||
| await context.CreateTimer(TimeSpan.FromSeconds(5)); | ||
| return true; | ||
| } | ||
| } |
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examples/Workflow/WorkflowSubworkflow/Workflows/DemoWorkflow.cs
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| // ------------------------------------------------------------------------ | ||
| // Copyright 2024 The Dapr Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // ------------------------------------------------------------------------ | ||
|
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| using Dapr.Workflow; | ||
|
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| namespace WorkflowSubWorkflow.Workflows; | ||
|
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| internal sealed class DemoWorkflow : Workflow<string, bool> | ||
| { | ||
| /// <summary> | ||
| /// Override to implement workflow logic. | ||
| /// </summary> | ||
| /// <param name="context">The workflow context.</param> | ||
| /// <param name="instanceId">The deserialized workflow input.</param> | ||
| /// <returns>The output of the workflow as a task.</returns> | ||
| public override async Task<bool> RunAsync(WorkflowContext context, string instanceId) | ||
| { | ||
| Console.WriteLine($"Workflow {instanceId} started"); | ||
| var subInstanceId = instanceId + "-sub"; | ||
| var options = new ChildWorkflowTaskOptions(subInstanceId); | ||
| await context.CallChildWorkflowAsync<bool>(nameof(DemoSubWorkflow), "Hello, sub-workflow", options); | ||
| return true; | ||
| } | ||
| } |